Mechanical Engineering Mcqs

A. the direction and magnitude of the velocity at all points are identical
B. the velocity of successive fluid particles, at any point, is the same at successive periods of time
C. the magnitude aricf direction of the velocity do not change from point to point in the fluid
D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
E. velocity, depth, pressure, etc. change from point to point in the fluid flow

A. Pascal law
B. Newton’s law of viscosity
C. boundary layer theory
D. continuity equation
E. Bernoulli’s theorem

A. orifice plate
B. venturi
C. rotameter
D. pitot tube
E. nozzle

A. vertical line
B. horizontal line
C. inclined line with flow downward
D. inclined line with upward flow
E. in any direction and in any location

A. only when the fluid is frictionless
B. only when the fluid is incompressible and has zero viscosity
C. when there is no motion of one fluid layer relative to an adjacent layer
D. irrespective of the motion of one fluid layer relative to an adjacent layer
E. in case of an ideal fluid

A. same
B. higher
C. lower
D. lower/higher depending on weight of body
E. unpredictable

A. pressure in pipes, channels etc.
B. atmospheric pressure
C. very low pressure
D. difference of pressure between two points
E. velocity in pipes

A. centre of gravity
B. centre of pressure
C. metacentre
D. centre of buoyancy
E. in between e.g. and centre of pressure

A. be horizontal
B. make an angle in direction of inclination of inclined plane
C. make an angle in opposite direction to inclination of inclined plane
D. any one of above is possible
E. none of the above

A. meta centre should be above e.g.
B. centre of buoyancy and e.g. must lie on same vertical plane
C. a righting couple should be formed
D. all of the above
E. none of the above